ash: Some code-cleanup around tray-resizing code.

ash/system/user/tray_user.cc

Index: ash/system/user/tray_user.cc
diff --git a/ash/system/user/tray_user.cc b/ash/system/user/tray_user.cc
index 75c6bfe82782d88e7645c54e70bcd1a430c2afb9..f431980d03a8b6b23ff2342fdd4329d7aff8e58a 100644
--- a/ash/system/user/tray_user.cc
+++ b/ash/system/user/tray_user.cc
@@ -74,12 +74,6 @@ class RoundedImageView : public views::View {
                      image_size_.height() + GetInsets().height());
   }
 
-  virtual void VisibilityChanged(views::View* starting_from,
-                                 bool is_visible) OVERRIDE {
-    if (starting_from == this && GetWidget())
-      GetWidget()->SetSize(GetWidget()->GetContentsView()->GetPreferredSize());
-  }
-
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
     View::OnPaint(canvas);
     gfx::Rect image_bounds(GetPreferredSize());